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The DRM helper drm_fb_build_fourcc_list() creates a list of color formats for primary planes of the generic drivers. Simplify the helper: - It used to mix and filter native and emulated formats as provided by the driver. Now the only emulated format is XRGB8888, which is required as fallback by legacy software. Drop support for emulating any other formats. - Also convert alpha formats to their non-alpha counterparts. Generic drivers don't support primary planes with alpha formats and some DTs incorrectly advertise alpha channels for non-alpha hardware. So only export non-alpha formats for primary planes. With the simplified helper, scrap format lists of the affected generic drivers. All they need is the firmware buffer's native format, from which the helper creates the list of color formats. Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de> Reviewed-by: Javier Martinez Canillas <javierm@redhat.com> Link: https://patchwork.freedesktop.org/patch/msgid/20230102112927.26565-13-tzimmermann@suse.de
71 lines
3.2 KiB
C
71 lines
3.2 KiB
C
/* SPDX-License-Identifier: GPL-2.0-or-later */
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/*
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* Copyright (C) 2016 Noralf Trønnes
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*/
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#ifndef __LINUX_DRM_FORMAT_HELPER_H
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#define __LINUX_DRM_FORMAT_HELPER_H
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#include <linux/types.h>
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struct drm_device;
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struct drm_format_info;
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struct drm_framebuffer;
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struct drm_rect;
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struct iosys_map;
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unsigned int drm_fb_clip_offset(unsigned int pitch, const struct drm_format_info *format,
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const struct drm_rect *clip);
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void drm_fb_memcpy(struct iosys_map *dst, const unsigned int *dst_pitch,
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const struct iosys_map *src, const struct drm_framebuffer *fb,
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const struct drm_rect *clip);
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void drm_fb_swab(struct iosys_map *dst, const unsigned int *dst_pitch,
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const struct iosys_map *src, const struct drm_framebuffer *fb,
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const struct drm_rect *clip, bool cached);
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void drm_fb_xrgb8888_to_rgb332(struct iosys_map *dst, const unsigned int *dst_pitch,
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const struct iosys_map *src, const struct drm_framebuffer *fb,
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const struct drm_rect *clip);
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void drm_fb_xrgb8888_to_rgb565(struct iosys_map *dst, const unsigned int *dst_pitch,
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const struct iosys_map *src, const struct drm_framebuffer *fb,
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const struct drm_rect *clip, bool swab);
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void drm_fb_xrgb8888_to_xrgb1555(struct iosys_map *dst, const unsigned int *dst_pitch,
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const struct iosys_map *src, const struct drm_framebuffer *fb,
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const struct drm_rect *clip);
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void drm_fb_xrgb8888_to_argb1555(struct iosys_map *dst, const unsigned int *dst_pitch,
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const struct iosys_map *src, const struct drm_framebuffer *fb,
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const struct drm_rect *clip);
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void drm_fb_xrgb8888_to_rgba5551(struct iosys_map *dst, const unsigned int *dst_pitch,
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const struct iosys_map *src, const struct drm_framebuffer *fb,
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const struct drm_rect *clip);
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void drm_fb_xrgb8888_to_rgb888(struct iosys_map *dst, const unsigned int *dst_pitch,
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const struct iosys_map *src, const struct drm_framebuffer *fb,
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const struct drm_rect *clip);
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void drm_fb_xrgb8888_to_argb8888(struct iosys_map *dst, const unsigned int *dst_pitch,
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const struct iosys_map *src, const struct drm_framebuffer *fb,
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const struct drm_rect *clip);
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void drm_fb_xrgb8888_to_xrgb2101010(struct iosys_map *dst, const unsigned int *dst_pitch,
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const struct iosys_map *src, const struct drm_framebuffer *fb,
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const struct drm_rect *clip);
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void drm_fb_xrgb8888_to_argb2101010(struct iosys_map *dst, const unsigned int *dst_pitch,
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const struct iosys_map *src, const struct drm_framebuffer *fb,
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const struct drm_rect *clip);
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void drm_fb_xrgb8888_to_gray8(struct iosys_map *dst, const unsigned int *dst_pitch,
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const struct iosys_map *src, const struct drm_framebuffer *fb,
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const struct drm_rect *clip);
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int drm_fb_blit(struct iosys_map *dst, const unsigned int *dst_pitch, uint32_t dst_format,
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const struct iosys_map *src, const struct drm_framebuffer *fb,
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const struct drm_rect *rect);
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void drm_fb_xrgb8888_to_mono(struct iosys_map *dst, const unsigned int *dst_pitch,
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const struct iosys_map *src, const struct drm_framebuffer *fb,
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const struct drm_rect *clip);
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size_t drm_fb_build_fourcc_list(struct drm_device *dev,
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const u32 *native_fourccs, size_t native_nfourccs,
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u32 *fourccs_out, size_t nfourccs_out);
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#endif /* __LINUX_DRM_FORMAT_HELPER_H */
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